The ozone hole is largely over the Antarctic and is between 21 and 24 million square kilmoetres in size. What is the Ozone Layer? What is your favourite chemistry experiment mentioned in this hub?
Ozone gases are our protection against UVB radiation. A nuclear reaction where the nucleus of an atom splits into smaller parts is known as nuclear fission or nuclear fusion? Under a microscope you can see that there are millions of tiny craters on the surface.
Take iron - whilst extremely strong, it is also very brittle Ozone is a special molecule of oxygen: What is H20 more commonly known as? Bubbles in fizzy drinks can only form at points called nucleation sites - these are sharp edges or bits of dirt or grime that helps the release of carbon dioxide gas.
Mix nickel and titanium and you get Nitinol, a smart alloy used to make spectacle frames. At room temperature, what is the only metal that is in liquid form? These were nothing more than sticks impregnated with sulphur.
An electron carries a positive charge. A proton carries a positive charge. Nickel-Iron alloys are common in meteorites. This is due to the substitution of sugar with the sweetener aspartame.
Chemistry Quiz Chemistry is an amazing subject which combines a number of different sciences, attempting to make sense of the complicated world we live in. It is up to 20kilometres thick and most of this gas is found in the stratosphere.
What orbits the nucleus of an atom? The earliest match is thought to have arisen in China in AD. The first friction match was invented in by English chemist, John Walker.
This allows the match to catch. This is removed when striking the head against the box, exposing the phosphorus. What is the main gas found in the air we breathe? What is the fourth most abundant element in the universe in terms of mass? Acids have a pH level below 7. Is sodium hydroxide NaOH an acid or base?
What is the centre of an atom called? The largest recorded ozone hole occurred in Chemistry questions and answers Bases have a pH level below 7. Try our fun chemistry quiz and see what you really know about topics such as organic chemistry, atoms, reactions, acids and bases.
Add in a little carbon and you make steel - an alloy with the strength of iron but it not brittle. Barium plus a Chlorine producer Blue Copper plus a Chlorine producer Purple Silver Aluminium or Magnesium powder Oranges, reds and whites are usually made through incandescence.
Certain mixtures are even more impressive. What is the chemical symbol for gold? How Does a Match Light? Blues and greens are usually made through luminescence.Organic Chemistry Practice Multiple Choice Questions These questions are designed to give you practice with multiple choice questions.
If you select the wrong answer, there are suggestions to help you see why that answer is not correct and guide you to the correct answer. You even knew the answers to the tricky questions.
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Chemistry Test questions in this practice book. However, The worksheet on page 51 lists the correct answers to. the questions.
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